As a senior at Gann Academy in Waltham, Jayme Callum was the Independent Girls’ League MVP in volleyball and softball.

With those accomplishments in the rear-view mirror, the Peabody 18-year-old is now busy preparing for her freshman year at Ursinus College in Collegeville, Pa., where she will tackle both sports.

Like many other student-athletes making the jump from high school to college, she has put in countless hours in the past few months trying to get in tiptop shape for making the leap. For this crew, a good chunk of the magical summer after high school graduation is spent in the weight room and on the field.

As a two-sport player, Callum has some experience managing time and energy. Still, this summer presented new challenges. There was the training regimen recommended by Cecily Scavicchio, her volleyball-coach-to-be at Ursinus, and then the two summer softball teams she plays for.

“We’ve had so many games lately that it’s been hard to balance my day,’’ said Callum, “but it’s been working fine.’’

Her coaches understand how demanding time management can be. Softball coach Samantha Campo“actually told me to not open the workout at all, to just focus on the volleyball workout,’’ Callum said.

Scavicchio was a dual-sport collegian herself, playing volleyball and basketball at Neumann University. “I think it’s a great opportunity to delve into athletics while you have the four years to do so,’’ she said, “and really make a career out of them.’’

Callum’s mother played college volleyball at UMass Amherst, and her father played college baseball at Lehigh. They’ll have to endure a nearly six-hour car ride each way to see their daughter play in college, but they’re going to do it as many times as possible.

It’s a mixed bag of emotions for Callum as she packs her things.

“I’m definitely nervous, coming in and not knowing anyone,’’ she said. “I’m excited to get on the court and meet the girls, meet my new friends.’’

Meanwhile, Nicole Scarfo, 18, of Boxford, has just taken her first steps as an incoming student on the campus of Saint Anselm College in Manchester, N.H. And after extensive summer preparation, she feels ready to join the soccer team.

“Playing the game is going to be the biggest preparation for them,’’ said Saint Anselm coach Joel Bancroft, “so if they can get into an environment where they’ve got a game every week and two or three training sessions, that’s ideal.’’

Scarfo played for U23 Upper 90, a North Shore club team coached by Doc Simpson, who also coached her at the varsity level at Pingree School.

“Doc helped me the most, and the teammates I’ve been with [helped] mentally prepare and physically prepare for the next chapter,’’ said Scarfo. “I spent a lot of time playing in my position, and the practices were challenging, and I think they prepared me well for a great season.’’

“The speed of play and the athleticism clicks up a notch or two,’’ said Bancroft. “It takes a bit to adjust to the sheer pace and power of the game’’ at the college level.

Scarfo also worked out at Rep Fitness in Danvers almost every morning earlier this summer, starting at 6:30 and sometimes not leaving until 9.

Former Peabody cross-country star Marcelo Rocha, 19, is equal parts excited and nervous to start college at Providence College.

“I don’t know how to do laundry yet,’’ he said with a laugh. Rocha also doesn’t know when he’ll be able to return to competition, as he recently had to rest for four months after suffering a knee injury his doctors said was likely due to overuse.

Luckily for Rocha, he will have a lot of support when it comes to rehab, training, and the adjustment to college life. His older sister, Catarina, is a two-time cross-country All-American at Providence, and he already knows coach Ray Treacy, who’s going into his 33rd year as the school’s director of cross country and track.

“That’s the best-case scenario, when your coach coaches you for all three seasons, because they can design your workouts and your training so that it progresses each season,’’ said Rocha. “You can peak efficiently and you can run your best times and not have to take a season off because you’re tired and you went too hard one season.’’

Treacy said that the continuity of coaching runners year-round helps him build relationships of trust. He creates comprehensive workout plans to suit the needs of individual athletes.

“It wouldn’t be one program fits all,’’ said Treacy.

For Rocha, the plan is to work on conditioning and to rebuild his running base slowly but surely. Treacy isn’t going to rush his talented three-season runner back and jeopardize the college career he has in front of him.

Treacy knows, as do other top-notch coaches, that starting college life is enough of a challenge.

“You’re adjusting academically, and athletically, and socially as well, as some of them are away from home for the first time in their lives,’’ said Treacy. “You have to get them in the right structure so they can succeed in every aspect of their lives.’’

Tom Petrini can be reached at tom.petrini@globe.com.